Postbuckling Behavior of Shallow Lattice Dome (CROSBI ID 569961)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Lazarević, Damir ; Uroš, Mario ; Gidak, Petra
engleski
Postbuckling Behavior of Shallow Lattice Dome
The paper analyzes the postbuckling behavior of a single layered, shallow lattice dome. Equilibrium paths are obtained by the nonlinear finite element method using the geometrically exact beam finite element. The problem is solved by using the well known version of the Newton–Raphson Method, the Arc-Length Method. The constraint condition according to Riks is adopted. The bracketing technique, Bergan’s current stiffnes parameter and mode injection strategies are applied in order to detect and traverse the critical (especially bifurcation) points. Due to the difficulties and uncertainties near multiple bifurcations, the results from static analysis are further confirmed by a more robust nonlinear transient dynamic analysis using the Hilbert–Hughes–Taylor time stepping scheme (snap–through and snap–back are detected). The shape of the imperfection is treated as a linear combination of buckling modes and several values of extreme amplitudes (up to 50 cm) in a given shape are considered. Based on this approach, the load capacity of a single layered welded dome ˝Krešimir Ćosić˝, erected in Zadar, Croatia, is estimated.
Lattice Dome; postbuckling behaviour; Arc-Length Method; bracketing technique; current stiffness parameter; imperfection sensitivity
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Podaci o prilogu
282-283.
2010.
objavljeno
Podaci o matičnoj publikaciji
Extended Abstracts International Symposium of the International Association for Shell and Spatial structures (IASS)
Zhang, Q. ; Yang, L. ; Hu, Y.
Shanghai: China Architecture & Building Press
978-7-112-12504-3
Podaci o skupu
International Symposium of the International Association for Shell and Spatial structures (IASS) "Spatial Structures - Temporary and Permanent"
predavanje
08.11.2010-12.11.2010
Šangaj, Kina